Possible to change Library Overrided material once, but then locks. #74746

New Issue

Zach Hixson · 2020-03-14T00:13:50+01:00

Zach Hixson commented

2020-03-14 00:13:50 +01:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card:

GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 432.00
GeForce GTX 970

Blender Version
Broken: version: 2.83 (sub 8), branch: master, commit date: 2020-03-13 15:29, hash: 110a35ef5a

Also broken in 2.82. I don't know if it was broken prior to 2.82 though.

Short description of error
When using "Library Override," to link in an object from an external .blend file, it's possible to change the material even though the material dropdown button is grayed out by deleting the material slot and adding a new one. This works perfectly, but the dropdown is still grayed out and the only way to change the material again is to delete the material slot and add a new one.

Exact steps for others to reproduce the error

Create an object in a library .blend file with a material
Link in and override that object into a second .blend file
Click the "-" button in the material slots
Add new material
New material works fine and settings are editable, but the dropdown arrow, new material, and "X" button are all grayed out.

Here's a link to a video demonstrating the issue: Video

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: - GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 432.00 - GeForce GTX 970 **Blender Version** Broken: version: 2.83 (sub 8), branch: master, commit date: 2020-03-13 15:29, hash: `110a35ef5a` - Also broken in 2.82. I don't know if it was broken prior to 2.82 though. **Short description of error** When using "Library Override," to link in an object from an external .blend file, it's possible to change the material even though the material dropdown button is grayed out by deleting the material slot and adding a new one. This works perfectly, but the dropdown is still grayed out and the only way to change the material again is to delete the material slot and add a new one. **Exact steps for others to reproduce the error** 1. Create an object in a library .blend file with a material 2. Link in and override that object into a second .blend file 3. Click the "-" button in the material slots 4. Add new material 5. New material works fine and settings are editable, but the dropdown arrow, new material, and "X" button are all grayed out. Here's a link to a video demonstrating the issue: [Video ](https://youtu.be/RNlTuwnp4Io)

Zach Hixson commented

2020-03-14 00:13:50 +01:00

Added subscriber: @ZachHixson

Richard Antalik commented

2020-03-17 12:58:37 +01:00

Added subscriber: @iss

Richard Antalik commented

2020-03-17 12:58:37 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Richard Antalik commented

2020-03-17 12:58:37 +01:00

I can not reproduce this even in 2.82 or in 110a35ef5a.

Can you upload .blend files, that do exhibit this issue?

I can not reproduce this even in 2.82 or in `110a35ef5a`. Can you upload .blend files, that do exhibit this issue?

Zach Hixson commented

2020-03-18 18:53:03 +01:00

It doesn't seem to save in the file, so I'm afraid it's impossible to send. After some googling it seems that Library overrides of materials aren't supported yet, so it might have just been a button that the devs forgot to gray out.

Richard Antalik commented

2020-03-19 16:09:59 +01:00

Will have to look at how this is currently supported. If you can not share blend file can you make screen recording or screenshot of bug so there is munimum amount of miscommunication?

Zach Hixson commented

2020-03-19 16:18:45 +01:00

Here's a link to a video demonstrating the issue: Video

Here's a link to a video demonstrating the issue: [Video ](https://youtu.be/RNlTuwnp4Io)

Richard Antalik commented

2020-03-19 19:43:55 +01:00

Changed status from 'Needs User Info' to: 'Confirmed'

Richard Antalik commented

2020-03-19 19:46:43 +01:00

Thanks for video, for some reason I was linking and overriding material only.

Just a note, this glitch doesn't happen when you override object data.
Also when you remove all materials and add new one blender will crash.

type was NULL

>	blender.exe!RNA_struct_name_property(const StructRNA * type) Řádek 739	C

 	blender.exe!rna_property_override_diff_propptr_validate_diffing(PointerRNA * propptr_a, PointerRNA * propptr_b, const bool no_prop_name, bool * r_is_id, bool * r_is_null, bool * r_is_type_diff, unsigned char * * r_propname_a, unsigned char * propname_a_buff, unsigned __int64 propname_a_buff_size, unsigned char * * r_propname_b, unsigned char * propname_b_buff, unsigned __int64 propname_b_buff_size) Řádek 1190	C
 	blender.exe!rna_property_override_diff_default(Main * bmain, PointerRNA * ptr_a, PointerRNA * ptr_b, PropertyRNA * prop_a, PropertyRNA * prop_b, const int len_a, const int len_b, const int mode, IDOverrideLibrary * override, const unsigned char * rna_path, const int flags, bool * r_override_changed) Řádek 1729	C
 	blender.exe!rna_property_override_diff(Main * bmain, PointerRNA * ptr_a, PointerRNA * ptr_b, PropertyRNA * prop, PropertyRNA * prop_a, PropertyRNA * prop_b, const unsigned char * rna_path, eRNACompareMode mode, IDOverrideLibrary * override, const int flags, eRNAOverrideMatchResult * r_report_flags) Řádek 367	C
 	blender.exe!RNA_struct_override_matches(Main * bmain, PointerRNA * ptr_local, PointerRNA * ptr_reference, const unsigned char * root_path, IDOverrideLibrary * override, const eRNAOverrideMatch flags, eRNAOverrideMatchResult * r_report_flags) Řádek 726	C
 	blender.exe!BKE_lib_override_library_operations_create(Main * bmain, ID * local, const bool force_auto) Řádek 728	C
 	blender.exe!BKE_lib_override_library_main_operations_create(Main * bmain, const bool force_auto) Řádek 755	C
 	blender.exe!BKE_undosys_step_push_with_type(UndoStack * ustack, bContext * C, const unsigned char * name, const UndoType * ut) Řádek 513	C
 	blender.exe!ED_undo_push(bContext * C, const unsigned char * str) Řádek 98	C
 	blender.exe!wm_operator_finished(bContext * C, wmOperator * op, const bool repeat, const bool store) Řádek 912	C
 	blender.exe!wm_operator_invoke(bContext * C, wmOperatorType * ot, wmEvent * event, PointerRNA * properties, ReportList * reports, const bool poll_only, bool use_last_properties) Řádek 1304	C
 	blender.exe!wm_operator_call_internal(bContext * C, wmOperatorType * ot, PointerRNA * properties, ReportList * reports, const short context, const bool poll_only, wmEvent * event) Řádek 1484	C
 	blender.exe!WM_operator_name_call_ptr(bContext * C, wmOperatorType * ot, short context, PointerRNA * properties) Řádek 1530	C
 	blender.exe!ui_apply_but_funcs_after(bContext * C) Řádek 884	C
 	blender.exe!ui_handler_region_menu(bContext * C, const wmEvent * event, void * UNUSED_userdata) Řádek 10732	C
 	blender.exe!wm_handler_ui_call(bContext * C, wmEventHandler_UI * handler, const wmEvent * event, int always_pass) Řádek 620	C
 	blender.exe!wm_handlers_do_intern(bContext * C, wmEvent * event, ListBase * handlers) Řádek 2720	C
 	blender.exe!wm_handlers_do(bContext * C, wmEvent * event, ListBase * handlers) Řádek 2832	C
 	blender.exe!wm_event_do_handlers(bContext * C) Řádek 3227	C
 	blender.exe!WM_main(bContext * C) Řádek 450	C
 	blender.exe!main(int argc, const unsigned char * * UNUSED_argv_c) Řádek 526	C

Thanks for video, for some reason I was linking and overriding material only. Just a note, this glitch doesn't happen when you override object data. Also when you remove all materials and add new one blender will crash. `type` was NULL ``` > blender.exe!RNA_struct_name_property(const StructRNA * type) Řádek 739 C blender.exe!rna_property_override_diff_propptr_validate_diffing(PointerRNA * propptr_a, PointerRNA * propptr_b, const bool no_prop_name, bool * r_is_id, bool * r_is_null, bool * r_is_type_diff, unsigned char * * r_propname_a, unsigned char * propname_a_buff, unsigned __int64 propname_a_buff_size, unsigned char * * r_propname_b, unsigned char * propname_b_buff, unsigned __int64 propname_b_buff_size) Řádek 1190 C blender.exe!rna_property_override_diff_default(Main * bmain, PointerRNA * ptr_a, PointerRNA * ptr_b, PropertyRNA * prop_a, PropertyRNA * prop_b, const int len_a, const int len_b, const int mode, IDOverrideLibrary * override, const unsigned char * rna_path, const int flags, bool * r_override_changed) Řádek 1729 C blender.exe!rna_property_override_diff(Main * bmain, PointerRNA * ptr_a, PointerRNA * ptr_b, PropertyRNA * prop, PropertyRNA * prop_a, PropertyRNA * prop_b, const unsigned char * rna_path, eRNACompareMode mode, IDOverrideLibrary * override, const int flags, eRNAOverrideMatchResult * r_report_flags) Řádek 367 C blender.exe!RNA_struct_override_matches(Main * bmain, PointerRNA * ptr_local, PointerRNA * ptr_reference, const unsigned char * root_path, IDOverrideLibrary * override, const eRNAOverrideMatch flags, eRNAOverrideMatchResult * r_report_flags) Řádek 726 C blender.exe!BKE_lib_override_library_operations_create(Main * bmain, ID * local, const bool force_auto) Řádek 728 C blender.exe!BKE_lib_override_library_main_operations_create(Main * bmain, const bool force_auto) Řádek 755 C blender.exe!BKE_undosys_step_push_with_type(UndoStack * ustack, bContext * C, const unsigned char * name, const UndoType * ut) Řádek 513 C blender.exe!ED_undo_push(bContext * C, const unsigned char * str) Řádek 98 C blender.exe!wm_operator_finished(bContext * C, wmOperator * op, const bool repeat, const bool store) Řádek 912 C blender.exe!wm_operator_invoke(bContext * C, wmOperatorType * ot, wmEvent * event, PointerRNA * properties, ReportList * reports, const bool poll_only, bool use_last_properties) Řádek 1304 C blender.exe!wm_operator_call_internal(bContext * C, wmOperatorType * ot, PointerRNA * properties, ReportList * reports, const short context, const bool poll_only, wmEvent * event) Řádek 1484 C blender.exe!WM_operator_name_call_ptr(bContext * C, wmOperatorType * ot, short context, PointerRNA * properties) Řádek 1530 C blender.exe!ui_apply_but_funcs_after(bContext * C) Řádek 884 C blender.exe!ui_handler_region_menu(bContext * C, const wmEvent * event, void * UNUSED_userdata) Řádek 10732 C blender.exe!wm_handler_ui_call(bContext * C, wmEventHandler_UI * handler, const wmEvent * event, int always_pass) Řádek 620 C blender.exe!wm_handlers_do_intern(bContext * C, wmEvent * event, ListBase * handlers) Řádek 2720 C blender.exe!wm_handlers_do(bContext * C, wmEvent * event, ListBase * handlers) Řádek 2832 C blender.exe!wm_event_do_handlers(bContext * C) Řádek 3227 C blender.exe!WM_main(bContext * C) Řádek 450 C blender.exe!main(int argc, const unsigned char * * UNUSED_argv_c) Řádek 526 C ```

Bastien Montagne commented

2020-03-20 15:43:17 +01:00

Added subscriber: @mont29

Bastien Montagne commented

2020-03-20 15:43:17 +01:00

Override of materials is currently glitchy at best, this is a known issue. the only scenario which is kind of working is indeed to override object and obdata, or to assign materials to object instead of obdata...